In the odoo 13 community, when you make a sale and want to release the delivery note using a barcode (scanning the products), for some reason I can scan extra products, for example... If I have a product called "fries" with a quantity of 5, and I sell those 5, when I release the delivery note (via barcode) I scan the 5 quantities of the fried product and the product is removed along with the quantities that need to be scanned, BUT if you return By scanning that product twice You get the error that there is a quantity greater than the existing one, the product being scanned DISAPPEARS (it appears with a green background indicating that it was scanned correctly) and that product appears on the delivery note but in red, and also if There are no products. The scanner automatically tells me that the product does not exist (I get the error that something similar appears at the point of sale), but on the delivery note the product appears added in red (also the products that are added too many), any ideas how I can stop this? Thank you! 

odoo 13 community